A mild and efficient chemoselective N-benzyloxycarbonylation of amines using TBAB as a catalyst under solvent-free conditions

2009 ◽  
Vol 87 (2) ◽  
pp. 393-396 ◽  
Author(s):  
Kothamasu Suresh Babu ◽  
Vidadala Rama Subba Rao ◽  
Ravu Ranga Rao ◽  
Sakhamuri Sivaram Babu ◽  
Janaswami Madhusudana Rao
Keyword(s):  
Efficient Method ◽  
Aromatic Amines ◽  
Solvent Free ◽  
Solvent Free Conditions ◽  
Derivatives Of

We describe a mild and efficient method for the chemoselective N-benzyloxycarbonylation of amines by treatment of amines and aminoesters with benzyloxycarbonyl chloride (Cbz-Cl) in the presence of TBAB under solvent-free conditions in excellent yields. The method is general for the preparation of a wide variety of N-Cbz derivatives of aliphatic, aromatic amines, and aminoesters.

Solvent-free synthesis of novel vanillidene derivatives of Meldrum's acid: biological evaluation, DNA and BSA binding study

RSC Advances ◽  
2016 ◽  
Vol 6 (45) ◽  
pp. 39452-39459 ◽  
Author(s):  
Nenad Janković ◽  
Jovana Muškinja ◽  
Zoran Ratković ◽  
Zorica Bugarčić ◽  
Branislav Ranković ◽  
...  
Keyword(s):  
Biological Evaluation ◽  
Solvent Free ◽  
Binding Study ◽  
Meldrum's Acid ◽  
Meldrum’S Acid ◽  
Bsa Binding ◽  
Solvent Free Conditions ◽  
Derivatives Of ◽  
Solvent Free Synthesis

A series of novel O-alkyl vanillidene derivatives containing Meldrum's acid scaffold under solvent-free conditions were synthesized.

Silica gel induced cleavage of aziridines by aromatic amines under solvent free conditions

2002 ◽  
Vol 43 (22) ◽  
pp. 3975-3976 ◽  
Author(s):  
R.Vijaya Anand ◽  
Ghanshyam Pandey ◽  
Vinod K. Singh
Keyword(s):  
Silica Gel ◽  
Aromatic Amines ◽  
Solvent Free ◽  
Solvent Free Conditions

scholarly journals Green synthesis of new lawsone enaminones and their Z/E(CC)-isomerization induced by organic solvent

RSC Advances ◽  
2021 ◽  
Vol 11 (21) ◽  
pp. 12990-12994
Author(s):  
Abolfazl Olyaei ◽  
Amir Mohamadi ◽  
Nilufar Rahmani
Keyword(s):  
Organic Solvent ◽  
Green Synthesis ◽  
Aromatic Amines ◽  
Solvent Free ◽  
Triethyl Orthoformate ◽  
Guanidinium Chloride ◽  
New Class ◽  
Solvent Free Conditions

The synthesis of a new class of lawsone enaminone derivatives by using lawsone, triethyl orthoformate and aromatic amines in the presence of guanidinium chloride under solvent-free conditions has been developed.

Rapid and Green One-Pot Synthesis of Novel 2-(4-Hydroxy-2-oxo-2H-chromen-3-yl)-2-(arylamino)-1H-indene-1,3(2H)-diones

2021 ◽  
Vol 18 ◽  
Author(s):  
Abolfazl Olyaei ◽  
Zahra Ghahremany ◽  
Madieh Sadeghpour
Keyword(s):  
Aromatic Amines ◽  
Low Cost ◽  
Guanidine Hydrochloride ◽  
Reaction Times ◽  
Solvent Free ◽  
One Pot ◽  
Solvent Free Conditions ◽  
The One ◽  
High Yields ◽  
Work Up

: A green and efficient protocol was developed for the one-pot three-component synthesis of novel 2-(4-hydroxy-2-oxo-2H-chromen-3-yl)-2-(arylamino)-1H-indene-1,3(2H)-dione derivatives by the reaction of 4-hydroxycoumarin, ninhydrin and aromatic amines in the presence of guanidine hydrochloride as an organocatalyst under solvent-free conditions. The present approach offers several advantages such as low cost, simple work-up, short reaction times, chromatography-free purification, high yields and greener conditions.

An Efficient Method for Synthesis of 4-(Phosphonomethyl)benzene Derivatives under Solvent-Free Conditions.

ChemInform ◽  
2004 ◽  
Vol 35 (32) ◽  
Author(s):  
Ting Yang ◽  
Changxue Lin ◽  
Hua Fu ◽  
Yuyang Jiang ◽  
Yufen Zhao
Keyword(s):  
Efficient Method ◽  
Solvent Free ◽  
Benzene Derivatives ◽  
Solvent Free Conditions

Efficient method for ring opening of epoxides with amines by NaY zeolite under solvent-free conditions

2007 ◽  
Vol 264 (1-2) ◽  
pp. 162-169 ◽  
Author(s):  
Rukhsana Ilyas Kureshy ◽  
Surendra Singh ◽  
Noor-ul Hasan Khan ◽  
Sayed Hasan Razi Abdi ◽  
Eringathodi Suresh ◽  
...  
Keyword(s):  
Efficient Method ◽  
Ring Opening ◽  
Solvent Free ◽  
Nay Zeolite ◽  
Solvent Free Conditions ◽  
Ring Opening Of Epoxides

A multicomponent reaction on a ‘free’ KCC-1 catalyst at room temperature under solvent free conditions by visible light

RSC Advances ◽  
2016 ◽  
Vol 6 (59) ◽  
pp. 54236-54240 ◽  
Author(s):  
Seyed Mohsen Sadeghzadeh
Keyword(s):  
Visible Light ◽  
Multicomponent Reaction ◽  
Efficient Method ◽  
Room Temperature ◽  
Solvent Free ◽  
Green Protocol ◽  
Mild Conditions ◽  
Solvent Free Conditions

A green and efficient method for the synthesis of various triazolo[1,2-a]indazoletrione under mild conditions is reported, that making it a genuinely green protocol.

A One-Pot, Three-Component, Solvent-Free Synthesis of Novel 6H-Chromeno[3’,4’:5,6]Pyrido[2,3-d]Pyrimidine-Triones under Microwave Irradiation

2018 ◽  
Vol 42 (12) ◽  
pp. 604-607
Author(s):  
Loghman Firoozpour ◽  
Hoda Yahyavi ◽  
Ramona Ejtemaei ◽  
Setareh Moghimi ◽  
Alireza Foroumadi
Keyword(s):  
Microwave Irradiation ◽  
Efficient Method ◽  
Barbituric Acid ◽  
Reaction Times ◽  
Solvent Free ◽  
One Pot ◽  
Solvent Free Conditions ◽  
Substituted Benzaldehydes ◽  
High Yields ◽  
Solvent Free Synthesis

A green and efficient method for preparing novel heterocyclic systems is established through the reaction of differently substituted benzaldehydes, barbituric acid and 4-amino-2H-chromene-2-one under solvent-free conditions. This method affords 6H-chromeno[3’,4’:5,6] pyrido[2,3-d]pyrimidine-trione derivatives in high yields and short reaction times.

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